Improvement in door-screens



2 Sheets-Sheet 1. A. A. CARTER. DOOR-SCREEN.

No.171,5.01. 1 Patented Dec.28.,1875.

N PETERS, PHOTO-LITHOGRAPNER. WASHINGTON, D C.

Z Sheets-Sheet 2.1

A. A. CARTER. DOOR-SCREEN.

Patented Dec. 28, 1875 N. PETERS. PHOTO-LITHOGRAPNER, WASHINGTON, D C.

UNITED STATES PATENT OFFIC ALBERT A. CARTER, OF PHILADELPHIA,PENNSYLVANIA.-

. IMPROVEMENT IN DOOR-SCREENS.

Specification forming part of Letters Patent No. 171,501, dated December28, 1875 application filed August 24, 1875.

To all whom it may concern Be it known that I, ALBERT A. CARTER, of thecity and county of Philadelphia and State of Pennsylvania, have inventedcertain new and useful Improvements in Screens applicable to door andwindow openings, for excluding dust and insects from apartments whilepermitting ventilation through such openings; and I do hereby declarethe following to be a suflicient-ly full, clear, and -exact descriptionthereof to enable one skilled in the art to make and use the saidinvention.

Referring in so doing to the drawing annexed forming acomponent part ofthis specification, and letters of reference marked thereon, the sameletters of reference apply to the same parts in the several figures.

The nature of my invention consists in the construction of a lip uponthe upper edge of one door to cover the gap left by the overlapping ofthe frames holding one way from the casing or sash of the door orwindow.

Figure I shows a perspective elevation of one form of my invention;Figs. 2, 8, and 9, another form with parts detached to show theirconstruction. Figs. 3, 4, 5, 6, and 7 show detached parts.

In the form shown in Fig. 1 two frames, B and 0, covered by netting arehung upon gudgeons or pivots 0 (see Fig. 6) at the outer side turning inhorizontal stripes I and F, respectively, secured to the inner sill ofthe window and the molding next the sash. The strip F has a rabbetformed in it, and the strip I is fastened, by knee or angle piece Y,(shown in Fig. 5) to the inner molding next the window-sash. The framesB and 0 overlap each other in the center, and are held shut I by buttonsmarked N in Fig. 7. The buttons N are made of Z-shaped pieces of ductilemetal perforated in the center for the screws on which they turn,and'with the wings or end bent up to afford an easy hold to turn them.The advantage of this form of button is that it is made with but verylittle waste of metal, and possesses sufficient elasticity to easilyadapt itself to any changes in the thickness of the frames consequentupon moisture. The strips I and F are of sufficientbreadth to cover thethickness of both frames B and (l. The netting should be applied to theframes B and (J, so as to be in contact where the frames overlap.

In the forms shown in Figs. 2 and 9 the strips F and I are dispensedwith, and the pivots are inserted directly into the windowsill below,and directly into angle-pieces y, applied to the inner side moldings ofthe window. The cap R (shown in Figs. 8 and 9) is secured to the upperedge of the frame 13, thus closing the space between the frame B and thesash. Metallic corner-pieces Z are inserted in kerfs cut through themitered joints of the frames B and G, having their outer edges turned atright angles, as shown at d d in Fig. 2, and pins or screws passingthrough the parts of the frames B and O and the plates Z securely holdthem. The same form of button N is applicable to hold this form offrames when closed, but is only used at the lower corners.

It will be seen on inspection that the motion of the sash of a window ordoor is not interfered with in openings to which this invention isapplied by making the frames B and O to overlap. They can, withoutalteration, be applied to several-sized windows.

I am aware that overlapping sliding-screen frames, and also flush hingedframes, have been made and used; and these, therefore, I distinctlydisclaim but What I do claim as my invention is-- The hinged overlappingscreen-frames B and 0, combined with the cap R, as and for the purposeset forth.

ALBERT A. CARTER.

Witnesses:

' JOHN URIAN,

FRANK F. THOMPSON.

